It's the world's biggest high school science research competition -- an event where students share ideas and try to win awards and scholarships in various areas of science, technology, engineering and math.

Awards ranging from $3,000 to $500 were given to the first-through-fourth place winners in each category.

Jack Andraka, 15, of Crownsville, Md., took highest honors with the Gordon E. Moore Award and a $75,000 prize. He created a simple dipstick sensor to test blood or urine to determine if a patient has early-stage pancreatic cancer.

Nicholas Schiefer, 17, of Pickering, Ontario, and Ari Dyckovsky, 18, of Leesburg, Va., each won the Young Scientist Award and $50,000.

Young studied "microsearch" -- the ability to search small amounts of information like tweets and Facebook status updates -- and Dyckovsky investigated the science of quantum teleportation.